Abstract
Field experiment was conducted during 1993-94 season to determine the pattern of nutrient uptake and productivity of maize/sweet potato intercropping system. Four levels of nitrogen (0, 50, 100 and 150kg N ) and four levels of potassium (0, 40, 80 and 120kg O ) formed treatment variables. Plants were sampled periodically to determine dry matter and tissue concentrations of N and K in the individual plant components of intercropped maize and sweet potato. Nitrogen and potassium fertilizer did not interact significantly to nutrient uptake by any plant parts of intercropped maize and sweet potato. But application of N fertilizer independently enhanced N uptake in all the plant parts of maize and sweet potato. The uptake of N in leaf, leaf sheath, stem, husk, and cob of maize increased upto 90 days after planting (DAP) but grain continued to accumulate N till its maturity. Sweet potato exhibited a wide variation in N uptake pattern. Sweet potato leaf shared the maximum uptake of N at 50 DAP which rapidly increased at 70 DAP and then declined. Declination of N uptake by petiole and stem were observed after 120 DAP whereas N uptake by tuber increased slowly upto 90 DAP and then rapidly till harvest. Rate of applied K had very little effect on the uptake patterns in different components of intercropped maize. Pattern of K uptake by leaf, petiole and stem of sweet potato showed almost similar trend to N uptake. But uptake of K by tuber increased almost linearly with the K application. Pattern of N and K uptake by grain and tuber paralleled the grain yield of maize and sweet potato respectively. Intercropped productivity of maize and sweet potato found to be better by the application of 100kg N and 120 kg O
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 17
Claim · model-written summary
Nitrogen and potassium showed no significant interaction for maize nutrient uptake.
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen and potassium fertilizer did not interact significantly to nutrient uptake by any plant parts of intercropped maize and sweet potato”
Claim · model-written summary
Nitrogen and potassium showed no significant interaction for sweet potato nutrient uptake.
- Taxon
- sweet potato
_Flower.jpg?width=60)
Ipomoea batatase0 - Treatment
- Nitrogen and potassium fertilizere0
- Outcome
- nutrient uptakee0
- Direction
- did not interacte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Flower.jpg?width=500)
Verbatim
e0“Nitrogen and potassium fertilizer did not interact significantly to nutrient uptake by any plant parts of intercropped maize and sweet potato”
Claim · model-written summary
Nitrogen fertilizer enhanced N uptake in all maize parts.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of N fertilizer independently enhanced N uptake in all the plant parts of maize and sweet potato”
Claim · model-written summary
Nitrogen fertilizer enhanced N uptake in all sweet potato parts.
- Taxon
- sweet potatoIpomoea batatase0
- Treatment
- application of N fertilizere0
- Outcome
- N uptakee0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of N fertilizer independently enhanced N uptake in all the plant parts of maize and sweet potato”
Claim · model-written summary
N uptake in maize leaf, leaf sheath and stem rose through 90 DAP.
- Organ / stage
- leaf, leaf sheath, steme0
- Outcome
- uptake of Ne0
- Direction
- increasede0
- Qualifier
- 90 days after planting (DAP)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The uptake of N in leaf, leaf sheath, stem, husk, and cob of maize increased upto 90 days after planting (DAP)”
Claim · model-written summary
N uptake in maize husk and cob rose through 90 DAP.
- Organ / stage
- husk, and cobe0
- Outcome
- uptake of Ne0
- Direction
- increasede0
- Qualifier
- 90 days after planting (DAP)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The uptake of N in leaf, leaf sheath, stem, husk, and cob of maize increased upto 90 days after planting (DAP)”
Claim · model-written summary
Maize grain accumulated N until maturity.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“grain continued to accumulate N till its maturity”
t0“Maize”
Claim · model-written summary
Sweet potato leaf N uptake peaked at 50 DAP, rose at 70 DAP, then declined.
- Taxon
- Sweet potatoIpomoea batatase0
- Organ / stage
- leafe0
- Outcome
- uptake of Ne0
- Direction
- increasede0
- Qualifier
- at 50 DAP which rapidly increased at 70 DAP and then declinede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sweet potato leaf shared the maximum uptake of N at 50 DAP which rapidly increased at 70 DAP and then declined”
Claim · model-written summary
Sweet potato petiole and stem N uptake declined after 120 DAP.
- Taxon
- sweet potatoIpomoea batatast0
- Organ / stage
- petiole and steme0
- Outcome
- N uptakee0
- Direction
- Declinatione0
- Qualifier
- after 120 DAPe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Declination of N uptake by petiole and stem were observed after 120 DAP”
t0“sweet potato”
Claim · model-written summary
Sweet potato tuber N uptake rose slowly to 90 DAP then rapidly to harvest.
- Taxon
- sweet potatoIpomoea batatast0
- Organ / stage
- tubere0
- Outcome
- N uptakee0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N uptake by tuber increased slowly upto 90 DAP and then rapidly till harvest”
t0“sweet potato”
Claim · model-written summary
Applied K rate had little effect on K uptake patterns in maize parts.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rate of applied K had very little effect on the uptake patterns in different components of intercropped maize”
Claim · model-written summary
Sweet potato leaf, petiole and stem K uptake patterns resembled N uptake.
- Taxon
- sweet potatoIpomoea batatase0
- Organ / stage
- leaf, petiole and steme0
- Outcome
- Pattern of K uptakee0
- Direction
- almost similare0
- Comparator
- N uptakee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pattern of K uptake by leaf, petiole and stem of sweet potato showed almost similar trend to N uptake”
Claim · model-written summary
Sweet potato tuber K uptake rose almost linearly with K application.
- Taxon
- sweet potatoIpomoea batatast0
- Organ / stage
- tubere0
- Treatment
- K applicatione0
- Outcome
- uptake of Ke0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“uptake of K by tuber increased almost linearly with the K application”
t0“sweet potato”
Claim · model-written summary
Maize grain N and K uptake paralleled maize grain yield.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pattern of N and K uptake by grain and tuber paralleled the grain yield of maize and sweet potato respectively”
Claim · model-written summary
Sweet potato tuber N and K uptake paralleled tuber yield.
- Taxon
- sweet potatoIpomoea batatase0
- Organ / stage
- tubere0
- Outcome
- N and K uptakee0
- Direction
- parallelede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pattern of N and K uptake by grain and tuber paralleled the grain yield of maize and sweet potato respectively”
Claim · model-written summary
Maize productivity was better with 100kg N and 120 kg O application.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Intercropped productivity of maize and sweet potato found to be better by the application of 100kg N and 120 kg O”
Claim · model-written summary
Sweet potato productivity was better with 100kg N and 120 kg O application.
- Taxon
- sweet potatoIpomoea batatase0
- Treatment
- application of 100kg N and 120 kg Oe0
- Outcome
- Intercropped productivitye0
- Direction
- bettere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Intercropped productivity of maize and sweet potato found to be better by the application of 100kg N and 120 kg O”
The same questions in other papers
nitrogen · yield · Ipomoea batatas (sweet potato)Results differ
30 papers in the same direction as this paper · 4 in the opposite direction
- negative
- no effect
- no effect
31 papers more in this group
See all 35 papers →potassium · nutrient: content · Zea mays (maize)Results differ
21 papers in the same direction as this paper · 74 in the opposite direction
- positive
- positive
- positive
92 papers more in this group
See all 96 papers →nitrogen · nutrient: content · Ipomoea batatas (sweet potato)Positive and negative results
4 papers in the same direction as this paper · 4 in the opposite direction
- no effect
- negative
- no effect
5 papers more in this group
See all 9 papers →fertilization · nutrient: content · Ipomoea batatas (sweet potato)Positive and negative results
27 papers in the same direction as this paper · 5 in the opposite direction
- no effect
- no effect
- no effect
29 papers more in this group
See all 33 papers →nitrogen · nutrient: content · Zea mays (maize)Positive and negative results
402 papers in the same direction as this paper · 83 in the opposite direction · 3 reporting no difference from an alternative
- no effect
- positive
- no effect
485 papers more in this group
See all 489 papers →fertilization · nutrient: content · Zea mays (maize)Positive and negative results
1,025 papers in the same direction as this paper · 127 in the opposite direction · 11 reporting no difference from an alternative
- positive
- negative
- negative
1,160 papers more in this group
See all 1,164 papers →nitrogen · yield · Zea mays (maize)Positive and negative results
1,905 papers in the same direction as this paper · 234 in the opposite direction · 45 reporting no difference from an alternative
- positive
- positive
- positive
2,181 papers more in this group
See all 2,185 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.